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Bias introduced by conditioning on an intermediate variable: Comment on the article by Zhang et al
Author(s) -
Zhu Yanyan
Publication year - 2011
Publication title -
arthritis care and research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.032
H-Index - 163
eISSN - 2151-4658
pISSN - 2151-464X
DOI - 10.1002/acr.20443
Subject(s) - zhàng , conditioning , psychology , variable (mathematics) , psychoanalysis , political science , mathematics , law , statistics , mathematical analysis , china